Please remember: Ipsative tests are based on forced choice
questions and responses. Each choice is scored. These scores can only
represent the relative strengths of the person being tested and cannot
be compared to any other individuals. Such tests can typically be
identified in the marketplace by the test asking the person to ‘describe themselves’.Unfortunately,
all ipsative tests (self-descriptive questionnaires) like Myers-Briggs
Type Indicator (MBTI) or DISC (Dominance, Inducement, Submission, and
Compliance) or the Swiss 16PT are obsolete.

Normative tests
measure quantifiable characteristics on individual scales. These scales
can vary independently. Also the scores can measure the characteristics
of an individual against confirmed patters of normality (e.g. normal
distribution or Gaussian distribution). Normative testing allows people
to be compared to particular groups, populations, or jobs.Normative testing generally has a higher validity than ipsative.http://onlinedatingsoundbarrier.blogspot.com.ar/2014/03/misuse-of-normative-tests-by-some.html